Island



D.P.IS'TANTON. PIPE WRENCH.

(No Model.)

No. 447,377. Patented Mar. 3,-1891.

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UNITED STATES PATENT OFFICE.

DANIEL P. STANTON, OF WVARW'IOK, RHODE ISLAND.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 447,377, dated March 3, 1891.

Application filed December 5, 1890. Serial No. 373,679. (No model.)

To all whom it may concern.-

Be it known that I, DANIEL P. STANTON, of

\Varwick, in the county of Kent and State of Rhode Island, have invented a new and usef ul Improvement in Pipe-\Vrenches, of which the following is a specification.

The nature of the invention is fully described below, and illustrated in the accompanying drawings, in which- Figure 1 is an elevation of a pipe-wrench embodying my invention. Fig. 2 is a central vertical section of the same. Fig. 3 is a side elevation of thelower end of the 'main portion, showing a modification.

In Figs. 1 and 2 portions of the handle are represented as broken out.

Similar letters of reference indicate corresponding parts.

A represents the handle, which is integral with the frame or stationary jaw B. This lever B is bifurcated at B, as shown, and across the space between its two parallel parts extends the pivot'C, while its ends B are beveled and serrated.

D is the hook or movable jaw, with its end D curved, as shown, and serrated at D" on its inner side. This hook or movable jaw is provided with a longitudinal slot E, through which the pivot 0 extends, and by means of which it is held in connection with the frame B or stationary jaw. The rear end of the jaw is bored and screw-threaded from the end to the slot E to admit the screw H, provided with the thumb-piece H. A spring I is secured to the rear side of the frame, and its free end bears against the rear side of the hook or movable jaw D back of the pivotal point, so as to tend to force the hook end back-that is, to increase the angle of the jaw D in relation to the frame B. When a pipe, as K, is to be operated upon, the screw H is turned against the pivot, thus drawing back the stationary jaw D until the proper point is reached, and then by pressing with the thumb on the part H of the screw the rear end of the jaw D is forced back against the spring I into the space B between the parts of the frame B, and hence the hook end D is forced forward. The pipe is then inserted and the spring forces back the hook end D, and the pipe is firmly gripped between the two serrated portions D and B. It will be seen that these two serrated surfaces are not parallel, but are at angles with each other approaching toward the front side. Thus the pipe is carried well back and a high hold is taken above the center of the pipe. By this device a slight and yet firm hold can be taken, if desired.

In Figs. 1 and 2 the handle and jaw 13 are of wrought-iron, with the working ends of steel welded in. Ifdesired, I can make the handle and frame of malleable iron and slip in a steel dovetailed jaw L, (see Fig. 3,) holding it in place by a screw or pin L.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-- The herein described improved pipewrench, consisting, essentially, of the bifurcated frame or stationary jaw B, provided with the handle A, pivot O, and serrated ends B, the hook or movable jaw D, provided with the serrated face D and slot E, the screw H, entering the jaw D from the rear and bearing against the pivot C, and the spring I, secured to the frame and bearing against the movable jaw, as shown, said serrated faces of the two jaws being not parallel but at angles to approach each other at their forward ends, substantially as set forth.

DANIEL P. STANTON. Witnesses:

HENRY A. THOMAS, EUGEN P. STANTON. 

